Home / 3,615.57-4,989.20-2,123.55

Finding the Fourth Proportional to 3,615.57, 4,989.20 and 2,123.55

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Solution

The fourth proportional to 3,615.57, 4,989.20 and 2,123.55 is: 2,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.57 : 4,989.20 = 2,123.55 : x
  2. Step 2: Convert to fraction form
    3,615.57/4,989.20 = 2,123.55/x
  3. Step 3: Cross multiply
    3,615.57x = 4,989.20 × 2,123.55
  4. Step 4: Simplify right side
    3,615.57x = 10,594,805.04
  5. Step 5: Solve for x
    x = 10,594,805.04/3,615.57
  6. Step 6: Final answer
    x = 2,930.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.